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Marquise|Natural|GIA

1.50ct E SI1 Marquise Natural Diamond

ID • E/SI1 • GIA 2556989894

Certificate GIA 2556989894

Diamond specifications and retailer prices

From $10,022 AUD
£5,543 GBP
As of November 1, 2026
Save $9,263 AUD (48%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $19,286 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556989894. Listed at 9 retailers as of October 30, 2026, with prices from $10,022 to $19,286, a $9,263 spread on the same certified stone. NZ Jewellers lists it at $19,286. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle41.77°
Pavilion angle40.99°
OriginNatural
Grading LabGIA
CertificateGIA 2556989894
Dimensions10.49 × 5.87 × 4.02 mm
L/W Ratio1.79
Girdle conditionExtremely Thick
Key to symbols
Crystal, Needle, Indented Natural, Natural
Top View
10.49 mm5.87 mm1.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2556989894
Side View
Table 56.0%Crown 41.77°Girdle: MED-ETKPavilion 40.99°Culet: NoneDepth 68.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $19,286 AUD|Low: $9,962 AUD|High: $20,386 AUD|Avg: $13,235 AUD|-5.4%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$10,022 AUD
Retailer 5$10,321 AUD
Retailer 8$10,321 AUD
Retailer 3$10,788 AUD
Retailer 9$11,364 AUD
Retailer 7$11,530 AUD
Retailer 6$11,708 AUD
Retailer 2$16,069 AUD
NZ Jewellers$19,286 AUD

41 data points across 9 retailers

9 retailers$10,022 AUD to $19,286 AUD

A
Cheapest Retailer
-
$10,022 AUD
£5,543 GBP
A
Retailer 2
-
$10,321 AUD
$7,250 USD
View
A
Retailer 3
-
$10,321 AUD
$7,250 USD
View
A
Retailer 4
-
$10,788 AUD
£5,967 GBP
View
Retailer 5
-
$11,364 AUD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$11,530 AUD
$8,099 USD
View
A
Retailer 7
-
$11,708 AUD
$8,224 USD
View
B+
Retailer 8
-
$16,069 AUD
£8,888 GBP
View
Most Expensive
B
NZ Jewellers
29e4c08f-86f9-410e-ae17-cd1c8a797e97 · Oct 30
$19,286 AUD
$13,547 USD
View
8 more retailers have this diamond
Prices start from $10,022 AUDSave up to $9,263 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Marquise
$10,022 AUD